Global Patent Index - EP 0531084 A3

EP 0531084 A3 19931208 - MULTI-LAYER ATMOSPHERIC FADING IN REAL-TIME COMPUTER IMAGE GENERATOR

Title (en)

MULTI-LAYER ATMOSPHERIC FADING IN REAL-TIME COMPUTER IMAGE GENERATOR

Publication

EP 0531084 A3 19931208 (EN)

Application

EP 92307912 A 19920901

Priority

US 75449491 A 19910903

Abstract (en)

[origin: EP0531084A2] The effect of multi-layer atmospheric scattering on the visibility F of each point P on a visible surface of each polygon in a display scene, in a computer image generation (CIG) system, is provided by determining the effective average reciprocal half-fading distance between viewpoint and the viewed point, knowing the altitudes at which each of the different scattering layers start and accounting for any transitional slopes therebetween. The total reduced visibility of that viewed point P is a function of the average reciprocal half-fading distance for that point and of the total range between the viewed point P and the viewpoint VP. <IMAGE>

IPC 1-7

G06F 15/72

IPC 8 full level

G06T 15/50 (2011.01)

CPC (source: EP US)

G06T 15/50 (2013.01 - EP US)

Citation (search report)

  • [XP] WO 9118359 A1 19911128 - REDIFFUSION SIMULATION LTD [GB]
  • [A] COMPUTER DESIGN vol. 27, no. 1, August 1988, LITTLETON, MASSACHUSETTS US pages 50 - 61 WILLIAMS 'GRAPHICS SYSTEM DESIGNERS STRIVE FOR PHOTOREALISM'
  • [A] MAMMEN A.: "TRANSPARENCY AND ANTIALIASING ALGORITHMS IMPLEMENTED WITH THE VIRTUAL PIXEL MAPS TECHNIQUE.", IEEE COMPUTER GRAPHICS AND APPLICATIONS., IEEE SERVICE CENTER, NEW YORK, NY., US, vol. 09., no. 04., 1 July 1989 (1989-07-01), US, pages 43 - 55., XP000115865, ISSN: 0272-1716, DOI: 10.1109/38.31463
  • [A] HEALEY G.: "COLOR REFLECTANCE MODELS FOR RECOGNITION AND COMPUTER GRAPHICS.", PROCEEDINGS OF THE ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS. PACIFIC GROVE, NOV. 5 - 7, 1990., NEW YORK, IEEE., US, vol. 01 OF 02., 5 November 1990 (1990-11-05), US, pages 399 - 403., XP000280052

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0531084 A2 19930310; EP 0531084 A3 19931208; EP 0531084 B1 20010711; DE 69231922 D1 20010816; DE 69231922 T2 20011213; IL 102836 A0 19930131; IL 102836 A 19950831; JP 3191180 B2 20010723; JP H05205032 A 19930813; TW 225595 B 19940621; US 5357579 A 19941018

DOCDB simple family (application)

EP 92307912 A 19920901; DE 69231922 T 19920901; IL 10283692 A 19920817; JP 23552292 A 19920903; TW 81105742 A 19920721; US 9138093 A 19930715